What are two signs that different species may have a common ancestor?

Which of the following was NOT a source for Darwin’s ideas about evolution?

Which of the following is NOT an example of natural selection?

The process consisting of separation, adaptation, and division is

What is the process by which organisms that are better adapted to their environment survive and reproduce more successfully than less well adapted organisms do?

Many insects can adapt very quickly to insecticides because

The process by which populations slowly change over time is called

What process often begins by a portion of a population becoming physically or geographically separated?

What process would farmers use to produce vegetables that will grow in a specific climate?

Which was NOT a source of Charles Darwin’s ideas about evolution?

A spider may produce hundreds of eggs, only a few of which may survive. This is an example of

Which of the following is NOT an example of natural selection?

A characteristic that improves an organism’s ability to survive is a(n)

Darwin could not answer all of the questions regarding his new theory, because he did not know about

Darwin theorized that individuals having an advantage due to their traits or abilities will be more likely to survive and reproduce. His theory is known as

Trace remains of organisms that lived long ago are called what?

What does speciation create?

What can two different species have in common?

What did Charles Darwin help to explain?

What helps an organism survive in its environment?

What is it called when separated groups of a population cannot mate with each other?

Which of the following do scientists think was an ancestor of whales?

A group of herbivores are separated from their population. (An herbivore is an organism that eats only plant materials.) In the new environment, the only edible vegetation grows at the top of tall trees. Which of the following is a likely physical adaptation that may develop?

Which of the following features did whales possibly inherit from a four-legged ancestor?

Species producing more offspring than will survive to maturity is the part of natural selection called ____________________.

Individuals in a population competing for limited resources is the part of natural selection called ____________________.

The theory of natural selection explains how a population changes in response to its ____________________.

If natural selection is taking place, a population will tend to be ____________________ to its environment.

Evidence of common ancestors can be found in ____________________ and living organisms.

When an organism with a gene that  helps it survive and reproduce actually reproduces, the process of ____________________ occurs.

Slow changes in populations over time are known as _____________________.

Members of a species who live in the same place are a(n) _____________________.

The history of life shown by remains of once-living organisms is the _____________________.

Before the 1800s, people thought that the Earth was much younger than it actually was. How did the discovery of the Earth’s actual age help support Darwin’s theory of evolution?

Over time, certain frog populations have begun to mate at different times of the year. Because of this, they no longer are able to mate with each other. Are these frogs the same species? Explain you answer.

What difference did Darwin observe among the different species of Galápagos finches?

Why are scientists unsure about some parts of the “tree of life” on Earth?

Explain the relationship between competition for mates and natural selection.

Imagine that you have two male frogs that appear similar but have very different markings. What could you look at to help you decide if the frogs’ ancestors once belonged to the same species?

Scientists and physicians have growing concerns that modern medicines and chemicals will create varieties of bacteria and pests that are ever more difficult to destroy. Explain the process by which this could happen.

Use the following terms to complete the concept map below: